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HMB 高模量天然改性瀝青混合料動態模量研究 ?

Study on Dynamic Modulus of HMB High Modulus Natural Modified Asphalt Mixture

 彭楠峰¹ , 蔡燕霞^2 , 3 ,4 , 高    穎 ¹ , 楊    杰^2 , 3 ,4 , 李冷雪⁵

(1. 河北工程大學 土木工程學院，河北 邯鄲 056038; 2. 中路高科（北京）公路技術有限公司，北京 100088;

3. 公路建設與養護新材料技術應用交通運輸行業研發中心 ，北京 100088 ;

4. 交通運輸部公路科學研究院 ，北京 100088 ; 5. 中建路橋集團有限公司 ，河北 石家莊 056000)

摘   要： 為探究高模量天然改性瀝青混合料的動態模量及其主曲線的變化規律 ，以高模量天 然 瀝 青  ( HMB) 為瀝青膠結料 ，制備 EME20、AC20 兩種不同級配的瀝青混合料，使用 SPT 簡單性能儀 ，在不同溫度和頻率下對兩種不同級配瀝青混合料的動態模量進行檢測，分析了溫度和頻率對瀝青混合料動態模量的影響； 基于時溫等效原理，通過非線性最小二乘法擬合得到高模量瀝青混合料的主曲線方程 。結果表明： 在同一溫度下， 瀝青混合料動態模量隨荷載頻率的增加而提高 ，在同一頻率下，瀝青混合料的動態模量隨著溫度的升高而降低； 通過試驗測得兩種不同級配瀝青混合料的動態模量 ，再應用所得動態模量數據擬合出動態模量主曲線 ，算出不同溫度下的移位因子 ，得出的動態模量主曲線方程 ，對其不同溫度下的動態模量進行分析 ，預測分析出 EME-

關鍵詞： 高模量瀝青混合料； HMB 瀝青； 油石比設計； SPT 試驗； 動態模量主曲線

中圖分類號： U416      

文獻標志碼： A  

文章編號： 1005-8249 (2023) 06-0093-06

DOI : 10. 19860/j.cnki.issn1005-8249.2023.06.015

PENG Nanfeng1 , CAI Yanxia2 , 3 ,4 , GAO Ying1 , YANG Jie2 , 3 ,4 , LI Lengxue5

( 1. Hebei University of Engineering , Handan 056038 , China;

2. Beijing Zhonglu Gaoke Highway Technology Co. ，Ltd. ，Beijing 10088 , China;

3. Reserch and Development Center of Transport Industry of New Materials Technologies Application for Highway

Construction and Maintenance , Beijing 10088 , China;

4. Research Institute of Highway Ministry of Transport , Beijing 10088 ,  China;

5. China Construction Road and Bridge Group Co. ，Ltd. ，Handan 056000 , China)

Abstract：In order to explore the dynamic modulus of natural modified asphalt mixture with high modulus of HMB and the change law of its main curve, HMB was used as asphalt binder to prepare EME20 and AC20 asphalt mixture with different levels of composition. SPT simple performance instrument was used to detect the dynamic modulus of two kinds of asphalt mixture with different levels of composition at different temperatures and frequencies. The influence of temperature and frequency on dynamic modulus of asphalt mixture is analyzed. Based on the time-temperature equivalence principle, the principal curve equation of high modulus asphalt mixture is obtained by nonlinear least square fitting. The results show that the dynamic modulus of asphalt mixture increases with the increase of load frequency at the same temperature, and decreases with the increase of temperature at the same frequency. The dynamic modulus of two kinds of asphalt mixture at different levels is measured by test, and then the dynamic modulus data is applied to fit the dynamic modulus master curve, and the shift factor at different temperatures is calculated. The dynamic modulus master curve equation is obtained, and the dynamic modulus at different temperatures is analyzed. It is predicted that the high and low temperature performance of EME-20 graded asphalt mixture is better than that of AC-20 graded asphalt mixture.

Keywords: high modulus asphalt mixture;HMB asphalt;whetstone ratio design;SPT tests;principal curve of dynamic modulus

?基金項目： 國家自然科學基金  ( E080703) 。

作者簡介： 彭楠峰  (1996—) , 男 ，碩士研究生 ，主要從事道路工程材料研究。 

收稿日期： 2023-08-31